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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM AST 06 December 2025

Tonight and Sunday.

Wind light increasing to southerly 10 to 15 knots this evening then veering to west 15 to 20 Sunday morning. Wind veering to northwest 15 Sunday evening.

Scattered flurries tonight and Sunday morning. Visibility 1 mile or less in flurries.

Temperatures minus 6 rising to plus 1 near midnight.

Extended Forecast

Issued 03:30 PM AST 06 December 2025
Monday Wind northwest 15 knots increasing to northwest 30 in the afternoon.
Tuesday Wind west 20 to 25 knots diminishing to west 15.
Wednesday Wind southwest 20 knots diminishing to light.

Ice Forecast

Issued 10:00 AM EST 6 December 2025 Today Tonight and Sunday Open water except 2 tenths new ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of Atlantic - Maritimes marine weather areas Summerside Stephenville Airport North Cape Burgeo Pointe-des-Monts Port aux Basques Sagona Island St. Lawrence Tracadie Winterland Branch Hill Wreckhouse Halifax Harbour - 44258 LaHave Bank - 44150 Sept-Îles Airport Banquereau - 44139 Longue-Pointe-de-Mingan Île Rouge Île aux Perroquets Havre-Saint-Pierre Airport East Scotia Slope - 44137 Baie-Comeau Airport Mont-Joli Airport Rivière-la-Madeleine Saint John Airport Gaspé Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Heath Point Miscou Island Kouchibouguac Îles de la Madeleine Airport Kouchibouguac La Pocatière Grand Manan St. Stephen Fundy Park (Alma) New Carlisle Miramichi Pointe-au-Père Charlo Port Menier Bathurst Airport Île Bicquette Bas Caraquet Cap-Chat East Chedabucto Bay – 44488 West Chedabucto Bay – 44489 Lunenburg Charlottetown Airport Yarmouth Airport Pointe-Noire Western Head J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Nappan AAFC McNabs Island East Point Kentville AAFC Ingonish Beach Hart Island CFB Greenwood Grand Étang Eskasoni (First Nations) Debert Caribou Point Brier Island Cap-d'Espoir Beaver Island Baccaro Point
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 6 December 2025 Today Tonight and Sunday

Ice Edge

First ice edge estimated from New Brunswick near 4511N 6609W to
4508N 6549W to 4518N 6513W to Nova Scotia near 4510N 6445W. Sea ice
northeast of the ice edge.

Second ice edge estimated from Nova Scotia near 4546N 6254W to 4558N
6310W to Prince Edward Island near 4558N 6250W. Sea ice west of the
ice edge.

Third ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Fourth ice edge estimated from Prince Edward Island near 4630N 6319W
to 4741N 6431W to 4827N 6402W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fifth ice edge estimated from Anticosti Island near 4949N 6317W to
4946N 5954W to Quebec near 5125N 5736W. Sea ice north of the ice
edge.

Ice Coverage

Open water except 2 tenths new ice along parts of the coasts.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM AST 6 December 2025 Tonight and Sunday At 3:30 p.m. AST today low 1003 mb located south of West Scotian
Slope.
By 10:00 a.m. AST Sunday departing low 990 mb located southeast
of Laurentian Fan.

At 3:00 a.m. AST Sunday low 1004 mb located near the St. Lawrence
River.
By 3:30 p.m. AST Sunday low 1000 mb located over the northeastern
Gulf of St. Lawrence.

At 3:30 p.m. AST today ridge located over the eastern Marine
District.
By 3:00 a.m. AST Sunday dissipating ridge located over the eastern
Marine District.

Marine Weather Statement

Issued 3:22 PM AST 6 December 2025 Marine interests are advised that freezing spray warnings are in
effect for Gulf-Magdalen - northeastern half, Chaleur-Miscou, and
Anticosti.

Higher than normal water levels are expected at high tide late this
afternoon for Chaleur - Miscou.

Atlantic - Maritimes Area

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Marine Weather for Canada

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